Answer 1: Travel backpack: Normally, for short distances, 40 liters is enough. It is also possible to camp at 80 liters.
Answer 2: Casual shopping: The male’s back trumpet is not suitable, at least the medium …
Answer 3: The boy is a little bigger and looks darker.
Answer 4: Buy big ones on long distances, usually buy regular ones, buy tall ones big, and buy regular ones small.